Alphabet (GOOGL) stock today: Alphabet (GOOGL) jumped more than 6% to $302.87 and crossed $300 for the first time ever after Google launched Gemini 3. The stock hit an intraday high near $304. Volume reached 23.7 million shares. The market cap stood around $2.94 trillion. Alphabet’s 2025 gains are now above 50%. The company reported Q3 revenue of $102 billion, up 16%, with stronger margins. Gemini 3 delivers major advances in reasoning, multimodal inputs, and a 1 million-token window. The model integrates across Search, the Gemini app, Vertex AI, and Google’s new Antigravity platform.